– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Sun 22 Mar Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Sun 22 Mar Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Sun 22 Mar Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMild with heavy rain (total 23mm), heaviest during Tue afternoon. Becoming colder with a moderate fall of snow heaviest on Tue night. Mild temperatures (max 8°C on Mon afternoon, min 1°C on Tue night). Wind will be generally light. | Days 5–7 Weather SummaryA moderate fall of snow, heaviest on Wed afternoon. Becoming mild with drizzle, on Thu afternoon. Freeze-thaw conditions (max 11°C on Sat morning, min -3°C on Thu night). Wind will be generally light. | ||||||||||||||||
Sun 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | |  |  | |  |  | |  | | |  | |
rain shwrs | cloudy | clear | some clouds | light rain | mod. rain | mod. rain | mod. snow | light snow | light snow | light snow | snow shwrs | rain shwrs | clear | some clouds | some clouds | some clouds | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 7 | 4 | 3 | 4 | 3 | — | — | — | — | — | |
0.1 | — | — | — | 1.3 | 8 | 10 | 3 | — | — | — | — | 1.1 | — | — | — | — | |
max °C | 5 | 3 | 7 | 8 | 6 | 4 | 5 | 6 | 1 | 2 | 0 | 1 | 3 | -1 | 6 | 7 | 5 |
min °C | 5 | 3 | 3 | 7 | 5 | 3 | 5 | 1 | 1 | 2 | -2 | 0 | 2 | -3 | 0 | 7 | 4 |
4 | 3 | 3 | 7 | 5 | 0 | 2 | -2 | -2 | -2 | -2 | -2 | 0 | -6 | -2 | 6 | 2 | |
1150 | 1450 | 1450 | 1700 | 1650 | 1400 | 1600 | 750 | 650 | 700 | 350 | 650 | 850 | 0 | 1800 | 2300 | 2900 | |
Cloud base (m) | 700 | 6200 | 5550 | 900 | 2500 | 650 | 550 | 550 | 600 | 600 | 750 | 650 | 750 | 650 | 600 | 650 | 600 |
 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 6:58 | — | — | 6:56 | — | — |
 | 7:22 | — | — | 7:23 | — | — | 7:25 | — | — | 7:27 | — | — | 7:29 | — | — | 7:30 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mild with heavy rain (total 23mm), heaviest during Tue afternoon. Becoming colder with a moderate fall of snow heaviest on Tue night. Mild temperatures (max 8°C on Mon afternoon, min 1°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
A moderate fall of snow, heaviest on Wed afternoon. Becoming mild with drizzle, on Thu afternoon. Freeze-thaw conditions (max 11°C on Sat morning, min -3°C on Thu night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.